C++ Static Data Question:
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Explain what are volatile variables?


A volatile variable is a variable which is modified asynchronously by the threads that are concurrently running in a java application. A volatile variable does not allow having a copy of variable that is local. It is a different value from the value which is currently available in main memory. A volatile variable mandatorily have its data synchronized for all the threads. So that, whenever the value of the volatile variable is updated by any thread, all other threads can access the same value immediately. Higher access and update overhead are likely to the volatile variables on contrast to plain variables, as all threads have their own set of data for efficiency considerations.

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